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Romashka-Z-Leto [24]
2 years ago
6

Find the area of a circle with radius, r = 7.15m. Give your answer rounded to 2 DP.

Mathematics
2 answers:
SpyIntel [72]2 years ago
4 0

<u>Given</u><u> </u><u>:</u><u>-</u>

  • Radius of circle = 7.15m

<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u>

  • Area of circle

<u>Solution</u><u> </u><u>:</u><u>-</u>

Area of Circle = πr²

  • putting the value of <u>π </u>and <u>r </u>

Area = 3.14×(7.15)² m²

= <u>1</u><u>6</u><u>0</u><u>.</u><u>5</u><u>2</u><u>4</u><u>6</u><u>5</u><u> </u><u>,</u><u> </u>which rounded off to 2DP would be <u>1</u><u>6</u><u>0</u><u>.</u><u>5</u><u>2</u><u> </u><u>m²</u>

olchik [2.2K]2 years ago
3 0

\boxed{\Large {\mathcal {{{\color{orange}{Area  \: of  \: circle  \: =  \: πr²}}}}}}

  • r = 7.15m

\large \rm \pink{ \: Area  \: of  \: circle }\:\large\blue\implies \tt \large  πr²\:  \:  \:   \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:    \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \\  \\ \large \rm \pink{ \: Area  \: of  \: circle }\:\large\blue\implies \tt \large  \frac{22}{7}  \:  \times\:{7.15}^{2} \:  \:  \:     \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:  \: \\  \\\large \rm \pink{ \: Area  \: of  \: circle }\:\large\blue\implies \tt \large  \frac{22}{7}  \:  \times\:51.1225 \:   \:  \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:     \\  \\ \large \rm \pink{ \: Area  \: of  \: circle }\:\large\blue\implies \tt \large  \frac{22}{ \cancel7}  \:  \times\: \cancel{51.1225}  \:  \: ^{ \red{7.303} }  \:  \:  \:  \:  \:  \:  \:  \:   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \\  \\ \large \rm \pink{ \:Area  \: of  \: circle }\:\large\blue\implies \tt \large  {22} \:  \times\:7.303 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:    \:  \:  \:  \:  \:  \: \\  \\  \large \rm \pink{ \: Area  \: of  \: circle }\:\large\blue\implies \tt \large \: 160.666 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:

Hence , the area of circle is 160.66 m²

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